Antigen Preparation
A synthetic peptide AVLLP-K-KTESHHK (K119) at an ubiquited K119
Background
"Histones are basic nuclear proteins that together with DNA make up the nucleosome structure in eukaryotes. Nucleosomes consist of approximately 146 bp of DNA wrapped around a histone octamer composed of pairs of each of the four core histones (H2A, H2B, H3, and H4). Histone H1 and the N-terminal tail of H3 have key roles in the folding and inter-association of the chromatin fiber. Histone ubiquitination has been correlated with DNA repair and transcription, cellular differentiation, cell cycle regulation, spermatogenesis, protein trafficking, and response to stress. Histone H2A is monoubiquitinated at Lys119 by the PRC-1L complex (Polycomb repressive complex 1-like), which includes Ring1, Ring2, Bmi1 and HPH2. Ubiquitinated H2A normally represents about 15% of H2A, but this value can be as high as 50% in active chromatin. Ubiquitinyl histone H2A has also been associated with transcriptional silencing of large chromatin regions and linked to Polycomb silencing so the function of ubiquitinated H2A remains undefined. "
Applications/Suggested Working Dilutions
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Immunoprecipitation
2-5 µg/ml
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Flow cytometry
Not tested
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